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[HADOOP-10811] Allow classes to be reloaded at runtime - Hadoop - [issue]
...Currently hadoop loads its classes and caches them in the Configuration class. Even if the user swaps a class's jar at runtime, hadoop will continue to use the cached classes when using refl...
http://issues.apache.org/jira/browse/HADOOP-10811    Author: Chris Li, 2014-07-22, 19:04
[HADOOP-10825] Refactor class creation logic in Configuration into nested class - Hadoop - [issue]
...This first patch refactors class creation inside Configuration into a nested class called ClassCreator (a pretty uninspired name; I’m up for better naming suggestions). Since this is a refac...
http://issues.apache.org/jira/browse/HADOOP-10825    Author: Chris Li, 2014-07-15, 13:19
[HADOOP-10828] Allow user to reload classes - Hadoop - [issue]
...This patch should allow reloading classes at runtime. The software will maintain a set of extra jars to load classes from. The interface for adding and removing from this set will be done us...
http://issues.apache.org/jira/browse/HADOOP-10828    Author: Chris Li, 2014-07-15, 12:24
[HADOOP-10281] Create a scheduler, which assigns schedulables a priority level - Hadoop - [issue]
...The Scheduler decides which sub-queue to assign a given Call. It implements a single method getPriorityLevel(Schedulable call) which returns an integer corresponding to the subqueue the Fair...
http://issues.apache.org/jira/browse/HADOOP-10281    Author: Chris Li, 2014-07-15, 08:05
[HADOOP-10279] Create multiplexer, a requirement for the fair queue - Hadoop - [issue]
...The Multiplexer helps the FairCallQueue decide which of its internal sub-queues to read from during a poll() or take(). It controls the penalty of being in a lower queue. Without the mux, th...
http://issues.apache.org/jira/browse/HADOOP-10279    Author: Chris Li, 2014-06-20, 16:18
[HADOOP-10282] Create a FairCallQueue: a multi-level call queue which schedules incoming calls and multiplexes outgoing calls - Hadoop - [issue]
...The FairCallQueue ensures quality of service by altering the order of RPC calls internally. It consists of three parts:1. a Scheduler (`HistoryRpcScheduler` is provided) which provides a pri...
http://issues.apache.org/jira/browse/HADOOP-10282    Author: Chris Li, 2014-06-20, 07:22
[HADOOP-10376] Refactor refresh*Protocols into a single generic refreshConfigProtocol - Hadoop - [issue]
...See https://issues.apache.org/jira/browse/HADOOP-10285There are starting to be too many refresh*Protocols We can refactor them to use a single protocol with a variable payload to choose what...
http://issues.apache.org/jira/browse/HADOOP-10376    Author: Chris Li, 2014-06-12, 16:17
[HADOOP-10685] Migrate Standalone Refresh Protocols to the GenericRefreshProto - Hadoop - [issue]
...Now that we have a GenericRefreshProtocol, we should migrate existing protocols towards it.First, we will duplicate the functionality. If all goes well we can mark the old methods as depreca...
http://issues.apache.org/jira/browse/HADOOP-10685    Author: Chris Li, 2014-06-12, 03:19
[HADOOP-10508] RefreshCallQueue fails when authorization is enabled - Hadoop - [issue]
...When hadoop.security.authorization=true, the callqueue cannot be refreshed with hadoop dfsadmin -refreshCallQueue (protocol not found)....
http://issues.apache.org/jira/browse/HADOOP-10508    Author: Chris Li, 2014-05-29, 23:09
[HADOOP-10285] Admin interface to swap callqueue at runtime - Hadoop - [issue]
...We wish to swap the active call queue during runtime in order to do performance tuning without restarting the namenode.This patch adds the ability to refresh the call queue on the namenode, ...
http://issues.apache.org/jira/browse/HADOOP-10285    Author: Chris Li, 2014-05-29, 23:08
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